what tank is this off

[MikeM]

meant to be for a k but not so sure could do some side by side with my k

[Piki]

I think that is 550 K3.............

[stuartni]

looks exactly the same as the tanks on both my cb550s both k3 seen another thread on here saying the f model used the exact same tank as well people thought they where different sizes

[MikeM]

I was thinking f2 as paintwork underneath looks original ?

hope it is a k though

[LesterPiglet]

Identical to my F2 tank..to look at.